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Seismic Design of CLT Shear-Wall and Glulam Moment-Resisting Frame Coupled Structure
| 题名： | Seismic Design of CLT Shear-Wall and Glulam Moment-Resisting Frame Coupled Structure |
| 正文语种： | eng |
| 作者： | Biniam Tekle Teweldebrhan;Solomon Tesfamariam |
| 作者单位： | The Univ. of British Columbia;Univ. of Waterloo |
| 关键词： | Cross-laminated timber (CLT);Glulam moment-resisting frame;Wall-frame system;Buckling-restrained brace;Self-centering energy-dissipative brace;Timber beam-column joints (BCJs) |
| 摘要： | Abstract In response to the increasing need for sustainable construction materials, numerous innovative timber-based structural systems have been developed in the past two decades. While timber-based shear-walls are popular, moment-resisting timber frames have received less attention in recent studies. However, with the availability of ductile and resilient beam-column joints (BCJs), timber frames can now be effectively used either independently or in combination with others. This study explores the feasibility of a dual system, consisting of cross-laminated timber (CLT) balloon shear-wall and glulam moment-resisting frame (CLTW-GMRF), and investigates the potential interaction between the two systems under seismic loading. The building features ductile and energy-dissipative BCJs and hold-downs. A seismic design procedure, based on a targeted moment proportion (MP) between the two systems, is presented and applied on a 10-story building. The building is assumed to be located in Vancouver, Canada, and its seismic performance is examined using 30 ground motion records in OpenSees. The system’s efficiency with respect to engineering demand parameters is studied under different wall-to-frame MP values (50%–50% and 60%–40%) and ductility-related modification factors (2, 3, and 4). The study also investigates the system’s performance with two BCJs and hold-down alternatives with bilinear hysteretic and self-centering energy-dissipative responses. Given the availability of resilient connections, the result highlights that the CLTW-GMRF coupled system is a viable alternative for high-rise hybrid timber construction. Moreover, the system’s performance has significantly improved by using self-centering energy-dissipative systems. |
| 出版年： | 2023 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 149 |
| 期： | 12 |
| 页码： | 1.1-1.15 |
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